Course Title: Construct thermoformed bases and appliances

Part B: Course Detail

Teaching Period: Term1 2012

Course Code: DENT5258C

Course Title: Construct thermoformed bases and appliances

School: 155T Vocational Health and Sciences

Campus: City Campus

Program: C5206 - Diploma of Dental Technology

Course Contact: Mark Doherty

Course Contact Phone: 03 9341 1407

Course Contact Email:

Name and Contact Details of All Other Relevant Staff

Simon Pearse: Ph - 9341 1411
Fax - 93411401
Email –

Zanne Frazer: Ph - 9341 1402
Fax - 9341 1401
Email –

Nicholas Greer: Ph - 9341 1420
Fax - 93411401
Email –

James Moser: Ph – 9341 1417
Fax - 9341 1401
Email –

Nominal Hours: 20

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

• HLTIN301A Comply with infection control policies and procedures in health work
• HLTOHS200A Participate in OHS processes in the health industry
• HLTDT301B Construct models
• HLTDT302B Construct custom impression trays
• HLTDT304B Articulate models and transfer records

Course Description

This unit of competency describes the skills and
knowledge required to construct thermoformed bases
and appliances such as mouthguards, bleaching trays
and orthodontic retainers.

All procedures are carried out in accordance with
occupational health and safety policies and procedures,
current infection control guidelines, Australian and New
Zealand Standards, State/Territory legislative
requirements and organisation policy.

National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

HLTDT315C Construct thermoformed bases and appliances


1: Prepare model
2: Thermo-form appliance or base from blank
3: Trim, shape and finish appliances or bases

Performance Criteria:

1. Prepare model
1.1 Interpret prescription
1.2 Mark outline and scribe finishing lines where applicable
1.3 Apply block-out material as required
2. Thermo-form appliance or base from blank
2.1 Select thermo-forming material in accordance with the prescription and appliance to be constructed
2.2 Select thermo-forming equipment according to material
2.3 Apply heat to material to ensure that blank has been uniformly softened
2.4 Adapt softened material to cast ensuring adaptation is uniform with constant thickness as specified by manufacturer
2.5 Allow material to cool
2.6 Verify adaptation
3. Trim, shape and finish appliances or bases
3.1 Remove thermo-formed blank
3.2 Trim to outline and fit to model
3.3 Refine outline
3.4 Smooth and finish appliance or base

Learning Outcomes

On completion of this course the participants will be able to demonstrate, on a consistent basis, the process involved in the construction of thermoformed bases and appliances.

Details of Learning Activities

Participation in group activities based on a simulated workplace exercises.
Practical exercises
Individual exercises carrying out requirements of competency.
Student experiences in workplace “on job training”

Learning guide pass mark 80%

Teaching Schedule

Construct Thermoformed Baseplates and Appliances - 13/03/2012 (0830-1230)

Learning Resources

Prescribed Texts

Anatomy of Orofacial Structures


Mosby's Dental Dictionary



Other Resources

Overview of Assessment

Practical exercises, presentation of competency assessment and theoretical exams are used

Assessment Tasks

The assessments in this unit are undertaken in a simulated workplace and under the normal range of work conditions in the form of practical exercises, a practical competency, all of which are to be co-assessed with the following units;
HLTIN301C: Comply with Infection Control,
HLTOHS300B: Contribute to OHS Processes,
BSBWOR301A: Organise Personal Work Priorities,
BSBINM301A: Organise Workplace Information

A theoretical exam (PASS MARK 60%)

All forms of assessments and co-assessed units are to be competently passed to pass this unit.

Method of assessment

• Evidence of essential knowledge and understanding may be provided by:
- traditional or online (computer-based) assessment
- written assignments/projects
• Case study and scenario as a basis for discussion of issues and strategies to contribute to best practice
• Questioning
• Staff and/or client feedback
• Supporting statement of supervisor
• Authenticated evidence of relevant work experience and/or formal/informal learning
• Role play/simulation

Assessment Matrix

Weighting of the assessment tasks:

* Practical competency - 50%
* Theoretical exam - 50%  PASS MARK 60%

Course Overview: Access Course Overview